CN210229176U

CN210229176U - Liquid redistribution device for small-scale distillation column

Info

Publication number: CN210229176U
Application number: CN201920659603.0U
Authority: CN
Inventors: Xi Cui; 崔喜; Shaomin Li; 李少敏; Dichuan Li; 李迪川
Original assignee: Jisangsu Secol Chemical Co
Current assignee: Jisangsu Secol Chemical Co
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2020-04-03
Anticipated expiration: 2029-05-09

Abstract

The utility model relates to a relevant equipment technical field of rectifying column, and a lab scale rectifying column liquid redistribution device is disclosed, including the collection liquid fin, the top welding of collection liquid fin has a plurality of collection liquid dispersion poles, and the outer wall of collection liquid fin is located the bottom welding and has fixed subassembly. This lab scale rectifying column liquid redistribution device, collect redistribution device through increase liquid in the rectifying column internal packing, make the rectification in-process again, because the tower wall lime set that reasons such as body heat dissipation lead to is in the downflow in-process of adherence, advance to get into liquid and collect redistribution device, on the device, rely on liquid level difference gravity to flow automatically, it gets into the packing filler to redistribute on album liquid dispersion bar, with the steam contact that rises, realize the mass transfer separation once more, improve separation efficiency, improve the product purity of tower cauldron, can shorten the required rectification time of reaching the same product concentration requirement, improve the quality of heat sensitivity product, can reduce the energy consumption of rectification device, realize energy-conserving purpose.

Description

Liquid redistribution device for small-scale distillation column

Technical Field

The utility model relates to a relevant equipment technical field of rectifying column specifically is a lab scale rectifying column liquid redistribution device.

Background

The rectifying tower is widely applied to the fields of chemical engineering, pharmacy and water treatment due to the efficient gas-liquid separation capacity of the rectifying tower, but in early-stage work carried out in a laboratory, science and technology workers are often difficult to realize high-purity indexes of tower bottom products in the rectifying tower with the diameter smaller than DN65 adopted for carrying out rectification experiments. The reasons for this phenomenon are that the reflux in the column wall condensate and the reflux liquid in the top liquid phase of the rectification column are not completely distributed on the packing and subjected to re-separation in the process of flowing from the top to the bottom of the column, and part of the liquid flows back to the bottom of the column on the wall of the rectification column, causing back mixing, reducing the purity of the bottom product, and affecting the equipment investment, the acquisition of basic data and the industrial amplification. In order to solve the problem of purity reduction of a tower bottom product caused by back mixing, when rectification is carried out in a laboratory, a method for prolonging rectification time is generally adopted by scientific workers, but the method has a large influence on partial thermosensitive products, so that quality indexes such as product color, smell and the like are unqualified, and meanwhile, in the basic data acquisition process in the early stage of industrial amplification, product purity difference caused by liquid phase back mixing has a large influence on measurement and calculation of the number of theoretical plates required by rectification separation, so that one-time equipment investment is increased, on the other hand, more public works are required to realize separation, the separation efficiency is reduced, and the requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a lab scale rectifying column liquid redistribution device collects the redistribution device through increasing a plurality of liquids in the rectifying column festival, introduces wall flow liquid and packs in, realizes the redistribution of wall flow liquid, improves separation efficiency, improves tower cauldron product purity and quality, realizes energy-conserving purpose to a certain extent.

The utility model provides a lab scale rectifying column liquid redistribution device, includes the collection liquid fin, the top welding of collection liquid fin has a plurality of collection liquid dispersion poles, the outer wall that the collection liquid fin is located the bottom welding and has fixed subassembly.

Fixed subassembly contains the thick pipe, the one end and the welding of collection liquid fin of thick pipe, the other end slides and inlays and be equipped with the tubule, and the one end outer wall of tubule is located the thick intraductal welding of pipe and has been equipped with the spacing ring.

Be provided with fixed spring in the fixed subassembly, and fixed spring's one end and collection liquid fin welding to realize fixing with the interior filler of rectifying column through fixed spring.

Preferably, the vertical section of the liquid collecting fin is of a bowl-shaped structure.

Preferably, the outer wall of the liquid collecting fin is positioned at the edge and is evenly provided with a plurality of fan-shaped grooves.

Preferably, the top projection of the liquid collecting and dispersing rods is respectively and correspondingly distributed on the connecting line of the fan-shaped grooves.

Compared with the prior art:

(1) this lab scale rectifying column liquid redistribution device, collect redistribution device through increase liquid in the rectifying column internal packing, make the rectification in-process again, because the tower wall lime set that reasons such as body heat dissipation lead to is at the downflow in-process of adherence, advance to go into liquid and collect redistribution device, on the device, rely on liquid level difference gravity to flow automatically, it packs to carry out the redistribution on liquid collection dispersion bar and get into, contact with rising steam, realize mass transfer separation once more, separation efficiency is improved, the product purity of tower bottom is improved.

(2) This lab scale rectifying column liquid redistribution device collects the redistribution device through increasing the interior filler liquid of tower, can shorten and reach the required rectification time of same product concentration requirement, improves the quality of heat sensitive product.

(3) This lab scale rectifying column liquid redistribution device because of the device can shorten the rectification time, reduces the rectification and packs layer height, so can reduce the energy consumption of rectifier unit, realizes energy-conserving purpose.

Drawings

Fig. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is a schematic structural view of the fixing assembly of the present invention;

FIG. 4 is a diagram of the liquid distribution without the device;

FIG. 5 is a diagram showing the distribution of the liquid after the installation of the device.

In the figure: 1. collecting liquid warped pieces; 2. a liquid collecting and dispersing rod; 3. a fixing assembly; 301. a thin tube; 302. a limiting ring; 303. a thick pipe; 4. the spring is fixed.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in fig. 1-5, the utility model provides a technical solution: a liquid redistribution device of a small-scale test rectification tower comprises a liquid collecting fin 1, wherein a plurality of liquid collecting dispersion rods 2 are welded at the top of the liquid collecting fin 1, a liquid collecting redistribution device is additionally arranged in a packing in the rectification tower, so that in the rectification process, liquid condensate on the tower wall caused by heat dissipation of a tower body enters the liquid collecting redistribution device firstly in the process of flowing down along the wall, the liquid condensate flows automatically through the liquid level difference on the device and is redistributed on the liquid collecting dispersion rods 2 to enter the packing, and the liquid condensate contacts with rising steam to realize secondary mass transfer separation, thereby improving the separation efficiency, improving the purity of a tower kettle product, shortening the rectification time required by reaching the same product concentration requirement, improving the quality of a thermosensitive product, also reducing the energy consumption of the rectification device and realizing the purpose of energy saving, a fixed component 3 is welded at the bottom of the outer wall of the liquid collecting fin 1, and the fixed component 3 can limit a fixed spring 4, avoid fixed spring 4 to take place to bend, cause the device to take place the slope, the influence is to the collection of liquid, when using this lab scale rectifying column liquid redistribution device, need notice, every 30 to 50cm packing layer installation one, two adjacent device collection pieces are 60 to 90 installations.

Fixed subassembly 3 that sets up contains thick pipe 303, the one end and the 1 welding of collection liquid fin of thick pipe 303, the other end slides and inlays and be equipped with tubule 301, and the one end outer wall of tubule 301 is located thick pipe 303 and has welded spacing ring 302, tubule 301 can drive spacing ring 302 and slide in thick pipe 303, spacing ring 302 can effectually avoid the thick pipe 303 of tubule 301 roll-off, be provided with fixing spring 4 in the fixed subassembly 3, fixing spring 4 is used for realizing that the device is fixed with the interior filler of rectifying column, and fixing spring 4's one end and the 1 welding of collection liquid fin, the vertical cross-section of collection liquid fin 1 is bowl form structure, the outer wall of collection liquid fin 1 is located the edge and has evenly seted up a plurality of fan-shaped grooves, the overlook projection of a plurality of collection liquid dispersion bars 2 corresponds respectively and distributes on the line of a plurality of fan-shaped grooves.

When the device is used, the device can be placed in the packing in the rectifying tower, one end of the fixed spring 4 can be contacted with the packing in the rectifying tower, the extruded fixed spring 4 can stably fix the device in the packing in the rectifying tower, when the fixed spring 4 is extruded, the thin tube 301 can drive the limiting ring 302 to slide in the thick tube 303, the fixed component 3 can prevent the fixed spring 4 from being bent to cause the device to be not fixed firmly, when the device is installed, the device can be adjusted based on the diameter of a tower section, the installation position and the installation number can be adjusted according to the height of the tower section and the separation effect, simultaneously, one packing layer is installed in every 30-50 cm, the adjacent two device collecting sheets are installed at an angle of 60-90 degrees, through a small liquid collecting and distributing device installed on the tower wall, after collecting the wall flow liquid, secondary distribution in the packing is realized through the liquid collecting and distributing rod 2, so as to realize the contact of the wall flow liquid and the gas for secondary separation, improve the separation efficiency, improve the product purity of the tower kettle and realize the purpose of energy conservation.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a lab scale rectifying column liquid redistribution device, includes album liquid fin (1), its characterized in that: the top of the liquid collecting fin (1) is welded with a plurality of liquid collecting dispersion rods (2), and the outer wall of the liquid collecting fin (1) is positioned at the bottom and welded with a fixed assembly (3);

the fixing component (3) comprises a thick pipe (303), one end of the thick pipe (303) is welded with the liquid collecting fin (1), the other end of the thick pipe is embedded with a thin pipe (301) in a sliding mode, and the outer wall of one end of the thin pipe (301) is positioned in the thick pipe (303) and welded with a limiting ring (302);

and a fixing spring (4) is arranged in the fixing component (3), and one end of the fixing spring (4) is welded with the liquid collecting fin (1).

2. The liquid redistribution device for the pilot distillation column according to claim 1, wherein: the vertical section of the liquid collecting fin (1) is of a bowl-shaped structure.

3. The liquid redistribution device for the pilot distillation column according to claim 1, wherein: the outer wall of the liquid collection fin (1) is located at the edge and is evenly provided with a plurality of fan-shaped grooves.

4. The liquid redistribution device for the pilot distillation column according to claim 1, wherein: the overlook projections of the liquid collecting and dispersing rods (2) are respectively and correspondingly distributed on the connecting lines of the fan-shaped grooves.